Heart



ARNHEART. PRESSURE mmmnm Am VAL APPLICATION LED mun 4.19m,

maaagszaa ill pands or contracts, it Will .nk .51.. JLAl l r ll, Jinn iiL l f or i i n; rich/ens CHAUNGEY l3. EARNI-IEART, 0F IIill'DIAllAlPOLIS, IEIDZAIlf-s, ASSIGN 031i,

DEVICES COMPANY, 833 INDIANAPGLIS, IIx IDIA-YLL A, it. Still/P PRESSURE-INDICATING- filllb-VALITE.

Specification of Letters Patent.

Patented To all whom it may concern: I

Be it known that l, (hmuucnr B. EARN- nnixn' g, a citizen of the United States, and lQSlvlGlll) of Indianapolis, count-y oi lvlarion, and State of Indiana, have invented a certain new and useful, Pressure-lndieating Air-Valve; and I do hereby declare that the following is a full, clear, and exact descriptionthereot, reference being had to the accoinpanying drawings, in which like let-tors refer to like parts.

This invention is a pressure indicating air .valveitor pneumatic tires and other receptacles for holding fluid under pressure.

Unc feature ot' the invention con sists'in so constructing a valve stem and the alve carryingn'ieinber which is slidahle therein that they will always be maintained in the same angular relation to each other, that is, with the valve carrying member having no rotary movement Within the valve stem and yetheinp; free to have slidahlemovement longitiidinally 01 the valve stem, Pressure indicating numerals and graduations are placed on two opposite sides of said valve carrying member for indicating the pressin'e Within a pneumatic tire or the like and it 'is' de s'irahle that the valve carrying n'ien'ihei" in the valve stem moves inward or outward in the valve stem, the two series of indicating numerals and graduations should always be in their proper positions, facing the two sides of the automobile wheel,

Another feature oi the invention herein consists in the use of a double spiral spring for connecting the inner portion otthe valve carrying nien'rher with the valve stem so as to permit the longitudinal nio'ven'ient or. the valve carrying member as, for instai'ice, When actuated. by the pressure of the air in the pneuniatic'tire. Half of said spiral spring is Wound in one direction and the other hali thereof is Wound in the opposite direction so that as said double spring or not tend to turn or change the angle or position of the valve carrying member and the pressure indications thereon. In such construction where there is a single spring or a spring coiled in one direction only, when said spring expands or contracts, it tends to turn or change the angle or position of said valve carryingmember Within the valvestem and causes it often to lock, catch or stick in the valvestein. l i il h this doulile spring constructimi this dilliculty is avoided and the valve carrying; ineinher ivill anvays n re outward or inward straight and without any tendency to turn. in either direction and lock or stick in the valve stem. This is important because such constructions are relatively small and close fitting, and, therefore, there is great danger of the PlQSSlUIO indicating means 01' valve carrying nieniher sticking in the valve stem and not accurately indicating the pressure in the pneumatic tire, or the condition oi the main valve whether it is closed or not.

The full nature of the invention will understood {110111 the acconipa nving dra inns and claims:

in the drawings, Figure l is a side ole ration of a portion oi? a vehicle Wheel and pneumatic tire and said uw ire indicat ing: air valve secured in place thereon, Fig. 2 is a central vertical section through a portion of the inner tube and through. the air valve. said parts of said air valve lining in their closed position, is a central longii'iulinal section oi the outer portion oi? the air valve with the dust can removed and. the parts of the air valve shown in positions when the air valve is opera i 4- is an elevation oi the central portion oi the following description anethe valve carrying member on the same seal as Fig. 2. 5 is a section on the line Z-Z of Fig. 3. Fig. (3 is a side elevation of an automobile 'ivheel with said air valve in place;

There is shown herein an automobile Wheel of usual type having a telly -W, a detachahle rini V, an outer casing); ll and aninner tube T. The valve stem ii extends through the inner tube and the parts oi the wheel as usua and has on its inner end a head Q Within the inner l'lllfl' and there is an air passage l) with the outer portion thereoi reduced. On said ialve stem there is a sleeve ll longer than the alvo stem and seemed thereto l v its inner end being turned into an annular recess or groove in the valve stem near the head Q. Said sleeve is externally threaded throughout its length and it and the valve stem are clamped in place on the inner tuhc by a jam nut ll and a Washer it,

' The valve carrvino' nicmlicr t is longiiiidiually slidalile in the sleeve ill and at i ts llllli tube surrounding the reduced outer end of the valve stem and. beinghcld thereon by a sleeve l, the inner end of the sleeve being turned inward at K into an annular recess or groove surrounding said valve stem. The

inner portion of said sleeve is Contracted and wedges against the washcrJ.

The rubber tube F of greater diameter than the needle valve so as to leave an air chambcr H between them, as shown in Fig. 3. This air chamber is in communication with the air passage D in the valve stem and also with the horizontal air passage E extending diametrically through the valve stem and the longitudinally reduced air passage D in the inner portion of the valve carrying member and an enlarged air passage in the outer portion of the valve carrying. member, which portion of the air passage however contains and is controlled by a check 'alve (l of usual type.

zit portion M of the valve carrying member is provided with numerals, as shown in Figs. 1 and 2, -tor indicating the air pressure. i /hen the graduation immediately under any one of said numerals registers with the outer end of the sleeve ll, the air pressure in the pneumatic tire is imlicated by such numeral. llu order to distribute the graduations so as not to bring them too close together and cause confusion there is a ten pound graduation dial below and to the right of each central graduation, and then there is another ten pound graduation above and to the left of each central graduation, Therefore, only a tow numerals are required and the adjacent numerals may be thirty pounds apart, the space between two adjacent central graduations representing thirty pounds is divided into three ten pound sections by the right, left and center graduations.

The valve cal-lying member C has an annular shoulder N fitting snugly within the sleeve ll and said sleeve at its outer end has an iuturucd flange or shoulder L which tits suugl around the valve carrying n1cm her so that they will properly cooperate and one cannot escape from the other. There is an air tube Z, connected with any source of lluid under pressure. through wh ch air is introduced into the tire through said air valvc; This, however, may be of any usual construction.

The double spring is preferably made, as

4 shown'iu Fig. l. by taking two springs G and G coiled in opposite directions and secur ng their d acent ends by a tapering sleeve G into which. the tapering-ends of the wires of the two springs. are forced and sefor the purpose of charging a tire, the parts of the valve w1ll assume the positions shown in Fig. 3, and air can enter the through the valve from the supply tube which is applied to the outer end 1*" of the valve carrying member C by the usual nippleY. The air passes through the passages D, E, ti and D. As the air pressure in the tire and valve increases the valve carrying member C will be correspondiugly pushed outward gradually until the desired pressure is attained,

say pounds, as shown in Fig. 1, and then the nipple Y is removed and the air check 0 will prevent the escape of the air as usual.

After the tire has been charged, as above explained, the dust cap 0 is put in place on the sleeve B and screwed down until its outer end engages the outer end of the valve carrymg member at F and forces said valve -arrying member inward until the needle valve E is positively seated and closes the air passage D in the valve stem, as shown in Fig. 2. The dust cap acting through the valve carrying member will hold said valve E positively seated and prevent any possible leakage of air through the valve stem, as is .r very common trouble.

There are two sets o'lf' indicating numerals and 'rrzuluatirms on the portion M of the \tllVt carrying member. on the opposite sides thereof so that the same may be easily read from either side of the tire. To maintain said indicatingnumerals and graduations in such convenient posit-ions for reading, it is important that the v: lve carrying member U shall not have any turning or angular movementin thesleevell. Hence, said sleeve 13 is flattened at A. longitudinally thereof and likewise said valve carrying member C is flattened longitudinally thereof, as shown in Fig. 5, the two flattened sides of the said two members registering with each other, as there shown.

Since the pants of the device are small and close fitting, there is danger of the valve carrying member (7 being given some slight turning or angular lilOYOlllQllt so as to wedge it into the sleeve B and prevcutits free reciprocation in the slecvve and often, therefore, presenting a false reading of the air pressure. This is overcome by the double spring, as heretofore crqilained. so that as the double coil spring G and G expands and contracts, it will not tend to give any turning movement to the valve carrying member. The single spiral spring would tend to turn the valve carrying member in one direction, but the otherspiral spring oppositely coiled will tend to turn it in the opposite direction and since"said two springs are about the same length and have subsl-(mtially the same Sl'lBllglll, one nevitrnlizes :he act-inn m the other and hence, Shirl "valve carrying; member is never given my lurning er angular ineveinenli and, rhermfere never iveilgee 0r sticis but; moves inwardly freely and always accurately incliwiles l'he preesnre in l'he tire; and this is ltrne met only while the tire is being; rhurgeil, but while it is being USGQG At any ,inie 'l'h-e :zi: pressure in the tire can he earned by merely reineving the lust cap.

The invenlien claimed is:

l. {in air villve for pneinna'lic tires, tanks er ether receptacles for air under pressure inrlmling); r.- SluliiOmlif Y luhnlar men'rher, a member lenggiln linziilvand viehlingiy movable in said slutienslry member and always directly Slll jQCiZ lo the influence 0? line air pressure in said tire, tank or other recepizzcle and having pressure indications thereon to indicate the pressure of llieair and. a needle value integral with the movable Zl'IGID lOI adapted to engage and close cc 3lllllli f2til ll through the stationary member,

flhl (we members being formed 50 thin; the 1m neinber can have no turning er angle 1:11 \JYQIIlGlEiJ Within the other member:

[in air valve for pneumatic tir s, tanks or other receptacles for air under pressure including ii slncicn: ry tubular li'l lllll'bfil, a member longitudinally and yielding lv inevable in mid slaliiiiiiiig memher and always directly subject lie imiuence if lzhe air pressure in tire, tank miller receptacle an? mvin'" r22 l-WC cppesie fairies l/hereei' ser' 0" g ireh inciciltiene l0 iniliczile 'l'he rhe air and ii needle valve inl1ei we cen'iinunici lien 'lfihrengrh n .T w ember, emu we members siniier can with- I and c l "inn: 3:3 I v ormml 5e rhivi the inner n l turning er nngnlilr n'leve I; Mr valve for pneinnel'ic lenhe r recepilwles for air NEHlQYPFGSSIll mg; :i valve stem secnrel'l lze he "lire, mother receptacle maul; having an air l re lllel'ellireuglz, a sleeve on sllicl h'tQlfl, l incmbrr longitudinally inevirble in Sllll eleeve 22ml flexibly cl'mnec'lel'l with said elem and always subject in the influence of the air pressure in will lire, lzmlc er other rerepl'urle 41ml in said valve stem lliHl having pressure lfillllflll/ilil'lfi lhereen to indicate line pressure cl? lhe air and n needle v: lve inlegg rzll \vilh lhe lllUYlllllll member adapted to engage lllNl close (fk'lllllllllllll'llblill! lhrmlgzh the slzilicnliry member, will. sleeve and indicating member brim; so 'fqrmeil llllll l1hc im liruling member fan have he lurning or killgulzlr nmvement; within the ether member.

An air hire for pneumatic l'ires, tanks or ether receptacles for air under pressure including a. valve stem secured to the tire,

ieveble member iuicpled mill; or other re rvplecle :inrl 0 (11 r passe e flier-2th ren h w and with its cur portion l'nh zlvr ii valve f2 Tying member lnngilmlinellv movable in l tubule; lien (if the valve stem mll cari ving a Silif 'liionnry valve for conlrcliin the ii 1 through (he valve stcnn iii veive i irry i 7 member having; pre sure inilic inane thereon, and a pair of epgicsi'lely W0 mil cennecl'eel springs for yieldingg ly nwunling sill-(l valve carryin member and vielilingly TLFll slxi 11g its movement lliHlQl the influence cf vhe air pregame in Mill tire, tunl: 0r cl'her ele and in the vnlve e ing member ancl in; valve elem being; SO 1" member can hm no "linrn movement wilzhin the ether men 5. An air valve for pn .mtic l or other receptacle f r air under iixieur including ivv: ve elen'i secnrecl l1e lzhe lire, lzrnl; or other cep'aele and having air passage l'lierelhrmigzh llllll will) 1 Perl/inn tubular, a. valve cirrijvin g lengilmlinlilly zncvr la in will ti li i ml p; lien of the vzvlvc cl v valve l er cenl line, the air the. hire elem shill valve c having pressure imliezzlien; spring censl'rnction core pe -1 Y W-Oll'llCl connected secl'ieiv necking the valve 2:, valve stem arranged FA) that while i i and emitraiclingg; it will if eml vzilvoi carrying member in illifl v (S. An air valve for pllmlllll hlv er ilher recephwles fer air air passage lhe perliion l lllflll lengitmlimrlly, i lion of the illvn s glen: mill legrnl 'lzlve for en rhrengh l'he alve r member having gr (in a right and elt spirel spring for c neclzing he valve ca rying member ll valve stem mill lllfvllihlllfif the llIUVCliiOiliZ r j 11 valve .izrrryingr member will ineenei l1: neci; the melting enils elf ihhe sg rling" ggclaher. I

i. A n air valve 'ler 0r el'her receptacles i including it valve slveiii s lznnlq or ether receplmirle passage lhereivllrcugzli nail. lien lllllllllll, :i valve (fl'i"i"}ll.5f member l ngrilmliimlly mew: ble in frllihi lubiihlir nerlimi of the valve stem (Hill carrying an iiitcg ll-l ':ilve "for (:nnlucllingr (he llll' passage thrcugh the valve stem, sniil 'zilve Cl rrying member hav ng" pressure indications l;here0n, and {L spring censtrimlien for yielilingly Celine-cl;-

mg the valve carrying member with the lion oi the valve stem valve stem arranged so that While expand: inc: and contracting it will not tend to turn sa id *alve ez-urying n'iember in the valve stem, said spring construction being formed of two oppositely coiled spiral springs With their adjacent ends secured together,

8. An air valve for pneiunatie tires, tanks or other reccptzwles for air under pressure,

inc-liulingavalve stem secured to the tire, tank or other receptacle and havin a free air passage therethroilgh and with its outer portion. tubular, a "alvo carryingmember longitiulinally movable in said tubular porand carrying a. valve Ill, its inner end for controlling the air )assac-e through the valve stem, said valve oer- .rying member having pressin'e indications thereon, said valve carrying member having a, vertical o1' cningg" and a transverse opening cmnmunicating with. the lower end of the vertical opening, and an air tight elastic tubular connection between the inner part of the valve stem and said valve carryii member through which the air under p1 if sure in said lire, tank or other receptacle directly acts on, said valve carrying nieniber and c-auses'its actuation, whereby it indicates the air pressure, said valve carry 1;); meniher and outer tubular portion of the valve stem being so arranged that said member can have no angular movement.

9. An air valve for or other receptacles -for air under pressure, includinga valve stem secured to the tire, tank or other receptacle and having a free air passage therethrough, a sleeve screwed on said stem and extemfling outwardly there from, a. valve carrying member .longitndi na-lly movable in. said sleeve and having graduations thereon end else carrying a valve at its inner end for controlling the air passage therethi'ougi h, an air-tight elastic tubular connection. between said valve carrying member and the valve stem, a pair of oppositely Wound springs surrounding said airtight elastic connection for yieldingly connecting" sa in valve carrying member and valve stem and resis .ing the outward. move; ment of said valve carrying member and means to connect the meeting ends of said springs, said valve carryingmember and sleeve being; so arranged that said member can hare no angular increment in the sleeve In witness whereof, I hare hereunto ai fixed my a gmiture.

Ql il-KUNGEY l3. EARNI'IEART.

pn euinatic tires, tanks 

